Instrument or vocal microphone (PG57)



FIG. 1 is a perspective view of the instrument or vocal microphone (PG57) design;

FIG. 2 is a front view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a side view thereof;

FIG. 5 is a rear view thereof; and,

FIG. 6 is a bottom view thereof. 

The ornamental design for a instrument or vocal microphone (PG57), as shown and described. 